ACCEPTED: PEP 285

[Delaney, Timothy]

> From: James Logajan [mailto:JamesL at Lugoj.com]
> 
> Eri Ma Franci <max at alcyone.com> wrote:
> > Could you find something better to complain about?
> 
> Then I'd like to complain that neither you nor Guid va Rossu 
> addressed the 
> question I asked in my previous message concerning bools as 
> keys. If a bool 
> is to be treated as an int sometimes and sometimes not, I 
> don't recall 
> seeing anything about whether it will be treated as an int as 
> a dictionary 
> key. If I do:
> 
> x = ["is", "are"]
> y = {0: "", 1:"s"}
> 
> for n in range(3):
>    print "There %s %d item%s." % (x[n <> 1], n, y[n <> 1])

This has been addressed *many* times in these threads. If you have failed to
read them, that is your problem.

One last time.

True compares equal to 1. False compares equal to 0. Therefore, in a
dictionary, True and 1 are synonymous as keys, and False and 0 are
synonymous as keys. So, the following code:

d = {}
d[0] = 'Hello'
d[1] = 'World'
d[True] = 'T'
d[False] = 'F'

print len(d)
print d[1]
print d[True]
print d[False]
print d[0]

will print:

2
T
T
F
F

If that doesn't answer your question, I have no idea what will. There is no
ambiguity.

A bool *is an* int according to PEP 285, which has been accepted.

Tim Delaney